Pull strip for forming holes

ABSTRACT

The device is formed of a strand of flexible material that is helically coiled in the form of a preformed elongated member having adjacent coils removably bonded together. In using the device, the preformed member is embedded in concrete when in a wet state with one end of the preformed member extending at or close to the surface of the concrete. After the concrete has solidified, the end of the preformed member is pulled to break the bonds between adjacent coils to lengthen and reduce the diameter of the member to allow the strand to be removed from the concrete to form an aperture in the concrete from the surface.

[0001] This application is a continuation-in-part of U.S. patentapplication Ser. No. 10/094,286, filed Mar. 8, 2002.

BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The invention relates to a device and method for forming holes innew structures such as concrete.

[0004] 2. Description of the Prior Art

[0005] In many construction projects formed of concrete, holes must bedrilled into the concrete for receiving rebar for allowing theattachment of other structures to the concrete. The drilling procedurerequires expensive drilling equipment and is time consuming. In otherprocedures, metal or plastic sleeves are placed in the concrete when wetfor forming holes for receiving rebar rods. The sleeves cannot beremoved and remain in the concrete when it dries.

SUMMARY OF THE INVENTION

[0006] It is an object of the invention for providing a new and usefuldevice for use for forming holes in new concrete structures without anydrilling required.

[0007] It is a further object of the invention to provide a new andprocess for forming holes in new concrete structures without anydrilling required.

[0008] The present invention provides a device for use for forming anaperture in structure formed from unsolidified material that is capableof solidifying to a hard state The device comprises a strand of flexiblematerial that is helically coiled in the form of a preformed elongatedtubular member having adjacent coils extending between opposite ends ofsaid preformed member removably bonded together and having a givenoutside diameter such that said preformed member may be embedded inunsolidified material with one of said ends extending at least close toa surface of said material such that when said material solidifies, saidone end of said strand may be pulled to break the bonds between adjacentcoils of said strand to remove said strand from said solidified materialto form an aperture in said solidified material from the surface.

[0009] In accordance with one aspect of the present invention, thestrand is formed of flexible plastic material helically coiled to formsaid preformed member.

[0010] In accordance with still another aspect of the present invention,the preformed member has an aperture extending from said one end throughthe other of said ends with a cap coupled to said one end of said strandpartially covering said aperture at said one end.

[0011] In accordance with still another aspect of the present invention,the strand is formed of flexible plastic material helically coiled toform said preformed member.

[0012] In accordance with still another aspect of the present invention,there is gripping means coupled to said cap to facilitate removal ofsaid preformed member from said solidified material.

[0013] In accordance with still another aspect of the present invention,the strand is helically coiled to form said preformed member with anaperture extending from said one end to the other of said ends with saidaperture at said other end being closed.

[0014] The present invention also provides a tubular member formed froma plastic material and having two opposite ends with a tubular sidewallcomprising an inner surface defining a central aperture extendingbetween said opposite ends and an outer surface comprising a helicalcoil extending between said opposite ends defining a plurality ofadjacent coils with said sidewall between adjacent coils at said innersurface being thin enough to be broken by pulling on one end of saidtubular member while at least a portion of said tubular member spacedfrom said one end is held stationary to pull adjacent coils apart suchthat said tubular member may be embedded in unsolidified material withsaid one end extending at least close to a surface of said material suchthat when said material solidifies, said one end of said member may bepulled to break said side wall at said inner surface between adjacentcoils to pull said member from said solidified material to form anaperture in said solid material from the surface.

[0015] In accordance with one aspect of the present invention, thesidewall between adjacent coils at said inner surface has radialdimensions much less that the radial dimensions of said coils from saidinner surface.

[0016] The present invention also provides a structure, having aconcrete material having at least one surface, and an elongated helicaltubular member having adjacent coils that contact one another, themember having two opposite ends. The member is located in the concretematerial such that one of the ends is located close to the surface.

[0017] In accordance with one aspect of the present invention, there isa support in contact with the member, the support extending to a side ofthe concrete material.

[0018] In accordance with still another aspect of the present invention,the support further comprises one or more wires couple to an outside ofthe member.

[0019] In accordance with still another aspect of the present invention,the support further comprises a mandrel inserted into the member andcoupled to a wall along the surface of the concrete material.

[0020] In accordance with still another aspect of the present invention,there is a plate for coupling the mandrel to the wall.

[0021] The present invention also provides a method of forming anaperture into structure formed from unsolidified material that iscapable of solidifying to a hard state. An elongated preformed tubularmember having two opposite ends is embedded in said unsolidifiedmaterial with one of said ends located close to a surface of saidmaterial. The preformed member comprises a strand of flexible materialthat is helically coiled, with the coils being in contact with adjacentcoils and having a given outside diameter. After said materialsolidifies, pulling said one end of said strand to separate adjacentcoils of said strand to remove said strand from said solidified materialto form an aperture in said solidified material from said surface.

[0022] In accordance with one aspect of the present invention, thepreformed member is embedded in said material when in an unsolidifiedstate by pushing the other of said ends of said preformed member intosaid unsolidified material until said one end of said preformed memberis located close to said surface of said material.

[0023] In accordance with still another aspect of the present invention,the preformed member is embedded in said material when in anunsolidified state by attaching said preformed member to a supportmember, and the unsolidified material is placed around said preformedmember with said one end located close to said surface of said material.

[0024] In accordance with still another aspect of the present invention,the said material of said structure comprises concrete.

[0025] In accordance with still another aspect of the present invention,the solidified material forms a first slab of solidified material. Ametal rod is inserted and secured into said aperture with an outer endof said rod extending out of said solidified material The outer end ofsaid rod is embedded with unsolidified material which solidifies to forma second slab of solidified material with said first and second slabs ofsolidified material being joined by said embedded rod.

[0026] The present invention also provides a method of providing ananchor in a concrete material. A tubular member is provided, whichcomprises a strand of flexible material with two opposite ends. Thematerial is helically coiled, with each coil being in contact withadjacent coils. The tubular member having an outside thread pattern. Thetubular member is embedded in the unsolidified concrete material withone of the ends located close to a surface of the material. After theconcrete material solidifies, the one end is pulled to separate adjacentcoils and remove the strand from the concrete material, leaving anaperture in the concrete material from the surface. The aperture has thethread pattern. An anchor member having the same thread pattern isinserted into the aperture.

[0027] In accordance with one aspect of the present invention, theconcrete material is lifted by way of the anchor member.

[0028] In accordance with another aspect of the present invention, aworker safety system is secured to the anchor member.

BRIEF DESCRIPTION OF THE DRAWINGS

[0029]FIG. 1 is a side view of the coiled pull strip or strand of theinvention with adjacent coils bonded together.

[0030]FIG. 2 is a cross-section of the coiled stand of FIG. 1.

[0031]FIG. 3 is a top end view of the coiled strand of FIGS. 1 and 2.

[0032]FIG. 4 is a bottom end view of the coiled strand of FIGS. 1 and 2.

[0033]FIG. 5 is a modification of the coiled strand of FIGS. 1-4.

[0034]FIG. 6 illustrates the coiled strand of FIGS. 1 and 2 lengthenedby pulling the strand in one direction breaking the bonds betweenadjacent coils.

[0035]FIG. 7 illustrates two of the coiled strands of FIG. 1 connectedto reinforcing wire or rods in a trough for receiving concrete.

[0036]FIG. 8 is a top plan view of one of the coiled strands of FIG. 7held in place.

[0037]FIG. 9 illustrates a coiled strand on the left embedded insolidified concrete poured to form a desired structure and a hole formedon the right of the poured concrete after the strand has been pulled outof the concrete.

[0038]FIG. 10 illustrates a coiled strand of the invention being pulledfrom a solidified concrete structure to form a hole therein.

[0039]FIGS. 11 and 12 illustrate the modified coiled strand of FIG. 5being pushed into wet concrete to locate it in the position as shown inFIG. 12.

[0040]FIGS. 13 and 14 illustrate the use of a mandrel to hold a coiledpull strip similar to that of FIGS. 1 and 2 for use in forming a hole inthe edge of a concrete slab.

[0041]FIG. 15 is a cross-section of the coiled pull strip of FIGS. 13and 14.

[0042]FIG. 16 illustrates the pull strip of FIGS. 13-15 being pulledfrom the resulting hole formed in the dried concrete. In FIG. 16, thethreads at the outer end are not shown for purposes of clarity.

[0043] In FIG. 17, the resulting hole formed in the dried concrete withthe threads is shown in cross-section.

[0044]FIG. 18 illustrates a plurality of mandrels of the type of FIG. 13secured to a frame for holding plastic pull strip sleeves of the typeshown in FIG. 13.

[0045]FIG. 19 illustrates the pull strip sleeves located around themandrels.

[0046]FIG. 20 illustrates the resulting threaded holes formed in apoured concrete slab after the mandrels and sleeves are removed andthreaded rods to be screwed into the threaded holes.

[0047]FIG. 21 illustrates the ends of the rods extending out of theconcrete edge.

[0048]FIG. 22 illustrates an adjacent slab poured next to the slab ofFIG. 20 held together by the rods of FIG. 20.

[0049]FIG. 23 illustrates a rebar rod inserted into a threaded holeformed in concrete with the pull strip sleeve of FIGS. 13-15 and held inplace with a suitable plastic material.

[0050]FIG. 24 illustrates a modified coiled pull strip sleeve for usefor forming a hole through a concrete floor.

[0051] The resulting hole in the concrete floor is shown in FIG. 25.

[0052]FIG. 26 is a cross-section of the sleeve of FIG. 24 located in aconcrete floor around a metal sleeve.

[0053]FIG. 27 is a top view of the sleeve of FIGS. 24 and 26.

[0054]FIG. 28 is a cross-section of the sleeve of FIG. 24.

[0055]FIG. 29 is a cross-section of a portion of a tubular pull stripdevice of the invention with which when used in combination of the Table1 provides dimensions of different devices.

[0056]FIG. 30 is a cross-sectional view of a hole made with the device,shown in combination with a bolt.

[0057]FIG. 31 is a schematic view showing a worker safety linearrangement using the bolts and apertures.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0058] Referring now to FIGS. 1-4 and 6-10 of the drawings, the deviceof one embodiment of the invention is identified at 21. It comprises atubular side wall 22 having a cylindrical inner surface 22A defining acentral aperture 31 and an outer surface 22B comprising strand or stripof plastic material 23 helically coiled to form the elongated member 21having a given length and a given outside diameter when its coils arebonded together. In this state, adjacent coils 23C of all of the coilsare weakly or removably bonded together by a thin layer of plasticmaterial 25. The top 27 of the member 25 has a cap 29 bonded to the topcoil 23CT with a small circular opening 29A formed therethrough. Fromthe cap to the bottom coil 23CB, the central aperture 31 extends fromthe cap 29 through the bottom coil 23CB. Gripping strips 33S and 33Bextend outward from the cap 29.

[0059] By holding the device 21 at its lower end and pulling on thegripping strips 33A and 33B, the bonds 25 are broken such that adjacentcoils 23C are pulled apart to lengthen the device 21 and reduce itsoutside diameter as shown at in FIGS. 5 and 10. In FIG. 10 the resultinginternal threads of the aperture 61 on the right side are not shown forpurposes of clarity.

[0060] Referring to FIGS. 7-9 the device of FIGS. 1 and 2 is used in oneembodiment in the following manner. In FIGS. 7 and 8, members 41 and 43are reinforcing metal wires or members secured in a zone defined bywalls 45 to support concrete 51 poured in the zone to form a desiredstructure such as a roadway for supporting or guiding the wheels ofpassenger carrying vehicles. A plurality of the devices 21 are locatedin ring shaped metal members 53 and held in place by wires 55 and 57(attached to the walls 45) in positions where the holes are desired inthe concrete structure to be poured. The concrete 51 in a wet state ispoured from device 59 in the zone surrounding the devices 21 with theirtop caps 29 located near or at the surface 51S of the concrete withtheir gripping strips 33A and 33B extending upward above the uppersurface 51S of the concrete. The walls of the devices 21 keep the wetconcrete out of the center apertures 31 of the devices. After theconcrete 51 has cured or dried and solidified, the devices 21 are pulledout of the concrete leaving apertures in the concrete, one of which isshown at 61. The devices 21 can be pulled out of the solidified concreteby manually pulling upward on the strips 33A and 33B. As shown in FIG.9. This causes the thin bonds 25 to break such that adjacent coils 23Care pulled apart lengthening the device 21 and reducing its outsidediameter allowing it to be readily pulled out of the solidified concreteleaving the hole 61. Metal rebars 81 may be bonded into the holes 61with a suitable plastic such that concrete tracks may be poured on theupper surface 55S of the concrete and held in place by the rebars.

[0061] Although the invention is employed to form holes in new concrete,it is to be understood that it could be used to form holes in other typeof materials that solidifies from an uncured state to a cured state.

[0062] Referring to FIGS. 5 and 11 and 12, the device of FIGS. 1 and 2is modified to form the device 21A which is the same as device 21 excepta plug 71 is inserted and attached in the lower end of the aperture 31to plug the aperture 31 at the lower end 21L at coil 23CB. The device21A is embedded into wet concrete 51 by pushing the lower end 21L of thedevice 21A into the wet concrete 51 until its cap 29 is located at thesurface 51S of the wet concrete 51 as shown in FIGS. 11 and 12. When theconcrete 51 has solidified and hardened, the device 21A is pulled out ofthe concrete 51 in the same manner as device 21 is pulled out of theconcrete as described in connection with FIGS. 1-4 and 6-10 to form ahole 61 in the concrete.

[0063] In one embodiment, the plug 71 may be a suitable plastic orelastomer that is bonded inside of the aperture 31 at the lower end 21Lof the device 21A.

[0064] Referring now to FIGS. 13-22, there will be disclosed a device121 similar to that of FIGS. 1 and 2 for forming holes in concrete roadslabs when formed for connection with an adjacent slab to be formed. Thedevice 121 is formed without a cap as shown at 121 in FIGS. 18-21. Thus,the device 121 is the similar to the device 21 of FIGS. 1 and 2 exceptit has no cap 29 or gripping strips 33A and 33B. The device 121 may beinjection molded from polyethylene or polypropylene. It comprises ahelical strip strand forming adjacent coils 123C weakly bonded togetherby thin layers 125 of plastic material.

[0065] Referring to FIGS. 13-18 wooden forms 131, 133, 135 are securedon a base 137 to form a cavity 149 into which wet concrete is to bepoured. The form 131 has a plurality of metal guides 151 securedthereto. Each guide 151 comprises a square base plate 153 with apertures155 formed thereto to allow it to be attached to the form 131 withscrews 157. Extending inward from the plate 153 is a cylindrical mandrelor rod 159. The devices 121 then are placed around each mandrel 159 andwet concrete 161 is poured into the cavity 149 around the devices 121.After the concrete has dried, the form 131 and the guides 151 areremoved. Also removed are the forms 133 and 135. The devices 121 arepulled outward by breaking the bonds between adjacent coils leavingapertures 171 in the solidified concrete with internal threads 171T withthe apertures extending inward from the edge 161E of the solidifiedconcrete 161. One such aperture is shown at 171 in FIG. 17. Metal rods181 with threads 181T then are screwed into each aperture 171 with anextending portion 181A extending out of the concrete edge 161E such thatthe next slab of concrete 191 can be poured next to edge 161E embeddingthe rod extensions 181A with the rods 181 securing adjacent edges of theconcrete roadway together. Instead of using metal rods 181 with threads,metal rebar rods 185 may be dipped into a soft plastic material 83 andinserted into the apertures 171 as shown in FIG. 23. The plastic 83 whensolidified will hold the rebar in place with their ends 185A employedfor coupling with the next concrete slab to be poured. In FIG. 23, thethreads of the apertures 171 are not shown on the right for purposes ofclarity.

[0066] Referring now to FIGS. 24-28 there is disclosed a concrete floor201 in a building having an aperture 203 formed there through forreceiving utility pipes, etc. The aperture is formed by using anotherembodiment of the invention. FIG. 25 does not show the details of theaperture such as the internal threads etc. The embodiment comprises acup shaped plastic member 221 injection molded to form and having acylindrical shaped wall 231 formed of helical coils 233 with adjacentcoils being removably bonded together with a thin layer of plasticmaterial 235. The member 221 has a top wall 237 to which four pullstrips 239 are attached. The member 221 has a central opening 241 whichis open at its lower end.

[0067] The member 221 is used to form the aperture 203 through the floor201. An annular thin metal setting sleeve 251 with a lower metal wall orpan 253 also is employed in forming the aperture 203.

[0068] In forming the concrete floor 201, suitable forms are providedfor receiving wet concrete. Member 255 is a deck onto which the concreteis poured. In forming the aperture 203, the metal sleeve 251 and wall253 are placed where the aperture is desired and the member 221 islocated around the sleeve 251 as shown in FIG. 26. The sleeve 251 isprovided to give support to the member 221. After the concrete is pouredand has solidified, the pull strip coil 233 then is pulled to cause thecoils 233 to be pulled apart tearing or breaking the thin layers 235 toallow the coils to be pulled outward reducing the outer diameters of thecoils strand 233 such that the coil strip 233 may be removed frombetween the sleeve 251 and the aperture 203 formed by the coil member221. When the deck wall 255 is removed, the sleeve 251 and wall 253 willbe removed leaving the floor 201 with the aperture 203 formedtherethrough.

[0069] In one embodiment the device 21, 121 or member 221 (device) maybe injection molded from polyethylene or polypropylene. As an example,the device or member has a length of 5-12 inches and an outside diameterof ⅜-12 inches in an unstretched state. Referring to FIG. 29, the deviceor member has a maximum wall thickness A and a minimum wall thickness B.The minimum wall thickness B is the bonding layer or joint between thecoils. The wall thickness B is much less than the wall thickness A sothat when the coils (wall thickness A) are pulled, the joint (wallthickness B) will separate, while leaving the coils in one integrallength. By way of example only, the maximum wall thickness can be ⅛inches while the minimum wall thickness is {fraction (1/16)} inches. Byway of example only, for large size coils, 2-12 inches in diameter, themaximum wall thickness can be {fraction (3/16)} inches, while theminimum wall thickness can be ⅛ inches. As still another example, themaximum wall thickness is about 1.25 millimeters (mm) while the minimumwall thickness is about 0.125 mm. The wall thicknesses, diameters andlengths of the devices can vary according to the particular application.

[0070] In another embodiment, the device is a coiled spring, where thecoils are not joined together. The device can be made of metal orplastic. The coils are relatively stiff and tightly wound, wherein eachindividual coil contacts the adjacent coils, so as to prevent intrusionby the wet concrete between the coils. Once the concrete is set, an endof the device is pulled, separating the coils from one another andallowing removal of the device from the hole.

[0071]FIG. 30 shows an aperture 171 formed in concrete, after the device121 has been removed. FIG. 30 is substantially the same as that shown inFIG. 17. Instead of metal rods 181 of FIG. 20, bolts 301 are insertedinto the apertures 171. The bolts 301 have threads 303 that match thethreads 171T in the aperture 171. The head 305 of the bolt can be avariety of shapes and sizes, such as hex head, allen, eye, etc.

[0072] Once the bolt 301 is screwed into the aperture 171, the boltforms an anchor that is firmly secured to the concrete. A portion of thebolt (the head and part of the shank) is left exposed.

[0073] The bolt and aperture arrangement can be used in a number ofapplications. For example, a dead man, or block of concrete, can befitted with bolts received by apertures so as to provide lifting pointsto move the blocks. As another example, the bolts can provide anchorpoints for worker safety lines (see FIG. 31). In the construction ofconcrete buildings, apertures 171 can be made in concrete columns 311and bolts 301 set. Safety lines 313 can then be extended from column tocolumn, secured to the bolts. Workers can tie their tether lines 315 tothe safety lines. Such a system greatly improves worker safety,particularly on high rise buildings.

[0074] The foregoing disclosure and showings made in the drawings aremerely illustrative of the principles of this invention and are not tobe interpreted in a limiting sense.

1. A device for use for forming an aperture in structure formed fromunsolidified material that is capable of solidifying to a hard state,comprising: a strand of flexible material that is helically coiled inthe form of a preformed elongated tubular member having adjacent coilsextending between opposite ends of said preformed member removablybonded together and having a given outside diameter such that saidpreformed member may be embedded in unsolidified material with one ofsaid ends extending at least close to a surface of said material suchthat when said material solidifies, said one end of said strand may bepulled to break the bonds between adjacent coils of said strand toremove said strand from said solidified material to form an aperture insaid solidified material from the surface.
 2. The device of claim 1,wherein: said strand is formed of flexible plastic material helicallycoiled to form said preformed member.
 3. The device of claim 1, wherein:said preformed member has an aperture extending from said one endthrough the other of said ends with a cap coupled to said one end ofsaid strand partially covering said aperture at said one end.
 4. Thedevice of claim 3, comprising: said strand is formed of flexible plasticmaterial helically coiled to form said preformed member.
 5. The deviceof claim 3, wherein: gripping means coupled to said cap to facilitateremoval of said preformed member from said solidified material.
 6. Thedevice of claim 5, wherein: said strand is formed of flexible plasticmaterial helically coiled to form said preformed member.
 7. The deviceof claim 1, wherein: said strand is helically coiled to form saidpreformed member with an aperture extending from said one end to theother of said ends with said aperture at said other end being closed. 8.A tubular member formed from a plastic material and having two oppositeends with a tubular sidewall comprising an inner surface defining acentral aperture extending between said opposite ends and an outersurface comprising a helical coil extending between said opposite endsdefining a plurality of adjacent coils with said sidewall betweenadjacent coils at said inner surface being thin enough to be broken bypulling on one end of said tubular member while at least a portion ofsaid tubular member spaced from said one end is held stationary to pulladjacent coils apart such that said tubular member may be embedded inunsolidified material with said one end extending at least close to asurface of said material such that when said material solidifies, saidone end of said member may be pulled to break said side wall at saidinner surface between adjacent coils to pull said member from saidsolidified material to form an aperture in said solid material from thesurface.
 9. The tubular member of claim 8, wherein: said sidewallbetween adjacent coils at said inner surface has radial dimensions muchless that the radial dimensions of said coils from said inner surface.10. A structure, comprising: a concrete material having at least onesurface; an elongated helical tubular member having adjacent coils thatcontact one another, the member having two opposite ends; the memberlocated in the concrete material such that one of the ends is locatedclose to the surface.
 11. The structure of claim 10 further comprising asupport in contact with the member, the support extending to a side ofthe concrete material.
 12. The structure of claim 11 wherein the supportfurther comprises one or more wires coupled to an outside of the member.13. The structure of claim 11 wherein the support further comprises amandrel inserted into the member and coupled to a wall along the surfaceof the concrete material.
 14. The structure of claim 11 furthercomprising a plate for coupling the mandrel to the wall.
 15. A method offorming an aperture into structure formed from unsolidified materialthat is capable of solidifying to a hard state comprising the steps of:embedding an elongated preformed tubular member having two oppositeends, in said unsolidified material with one of said ends located closeto a surface of said material, said preformed member comprises a strandof flexible material that is helically coiled and the coils being incontact with adjacent coils and having a given outside diameter, aftersaid material solidifies, pulling said one end of said strand toseparate adjacent coils of said strand to remove said strand from saidsolidified material to form an aperture in said solidified material fromsaid surface.
 16. The method of claim 15, wherein: said preformed memberis embedded in said material when in an unsolidified state by pushingthe other of said ends of said preformed member into said unsolidifiedmaterial until said one end of said preformed member is located close tosaid surface of said material.
 17. The method of claim 15, wherein: saidpreformed member is embedded in said material when in an unsolidifiedstate by attaching said preformed member to a support member, andplacing said unsolidified material around said preformed member withsaid one end located close to said surface of said material.
 18. Themethod of claim 15, wherein: said material of said structure comprisesconcrete.
 19. The method of claim 15 wherein said solidified materialforms a first slab of solidified material, said method comprising thesteps of: inserting and securing a metal rod into said aperture with anouter end of said rod extending out of said solidified material, andembedding said outer end of said rod with unsolidified material whichsolidifies to form a second slab of solidified material with said firstand second slabs of solidified material being joined by said embeddedrod.
 20. A method of providing an anchor in a concrete material,comprising the steps of: providing a tubular member that comprises astrand of flexible material with two opposite ends, the material beinghelically coiled and with each coil being in contact with adjacentcoils, the tubular member having an outside thread pattern; embeddingthe tubular member in the unsolidified concrete material with one of theends located close to a surface of the concrete material, after theconcrete material solidifies, pulling on the one end to separateadjacent coils and remove the strand from the concrete material, leavingan aperture in the concrete material from the surface, the aperturehaving the thread pattern; inserting an anchor member into the aperture,the anchor member having the thread pattern.
 21. The method of claim 20further comprising the step of lifting the concrete material by way ofthe anchor member.
 22. The method of claim 20 further comprising thestep of securing a worker safety system to the anchor member.